化学与我们息息相关,请用所学化学知识完成下列问题: (1)实验室熄灭酒精灯时,不

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问题:

化学与我们息息相关,请用所学化学知识完成下列问题:

(1)实验室熄灭酒精灯时,不能用嘴吹灭,而用灯帽盖灭,用灯帽盖灭酒精灯的原理是_____________________________________________________________。

(2)我们穿的衣服通常是由纤维织成的,纤维又分为天然纤维和合成纤维,请你写出一种天然纤维的名称_________________________。

考点:燃烧与燃烧的条件安全措施和生活经验爆炸、自燃验证物质燃烧的条件
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患者,男,71岁,尿频,排尿困难4年,加重1个月,CT图像见图,最有可能的诊断是()

A.前列腺炎

B.前列腺增生

C.前列腺癌

D.前列腺脓肿

E.前列腺囊肿

题型:填空题

下列类别的特定减免税货物,免征进口关税同时免征进口环节增值税的是:

A.外商投资企业自有资金项目
B.国内投资项目进口自用设备
C.重大技术装备
D.贷款中标项目进口零部件

题型:填空题

第9题程序中,若代码CSEG1占用的内存空间是13AD0H~13AE4H,则代码段CSEG2在内存中的起始地址是 【10】

题型:填空题

注射剂的特点错误的是

A.全部为澄明液体,必须热压灭菌
B.适用于不宜口服的药物
C.适用于不能口服药物的患者
D.疗效确切可靠,起效迅速
E.产生局部定位及靶向给药作用

题型:填空题

For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines: a never ending flood of words. In (1) a job or advancing in one, the ability to read and comprehend (2) can mean the difference between success and failure. Yet the unfortunate fact is that most of us are (3) readers. Most of us develop poor reading (4) at an early age, and never get over them. The main deficiency (5) in the actual stuff of language itself—words. Taken individually, words have (6) meaning until they are strung together into phrases, sentences and paragraphs. (7) , however, the untrained reader does not read groups of words. He laboriously reads one word at a time, often regressing to (8) words or passages. Regression, the tendency to look back over (9) you have just read, is a common bad habit in reading. Another habit which (10) down the speed of reading is vocalization—sounding each word either orally or mentally as (11) reads.
To overcome these bad habits, some reading clinics use a device called an (12) , which moves a bar(or curtain) down the page at a predetermined speed. The bar is set at a slightly faster rate (13) the reader finds comfortable, in order to "stretch" him. The accelerator forces the reader to read fast, (14) word by word reading, regression and subvocalization practically impossible. At first (15) is sacrificed for speed. But when you learn to read ideas and concepts, you will not only read faster, (16) your comprehension will improve. Many people have found (17) reading skill drastically improved after some training. (18) Charlie Au, a business manager, for instance. His reading rate was a reasonably good 172words a minute (19) the training; now it is an excellent 1,378 words a minute. He is delighted that how he can (20) a lot more reading material in a short period of time.

A.training
B.habits
C.situations
D.custom

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